be2net: use adapter->flags to track SRIOV state

The driver so far used adapter->num_vfs value to check if SR-IOV is enabled
or not. But, the patch bec84e6("create optimal number of queues on SR-IOV
config") changed this logic. The adapter->num_vfs value is validated and set
much before SR-IOV is enabled. So, we now use an explicit flag to track
SR-IOV enabled state.

Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index 9ee445c..9c50814 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -3049,6 +3049,7 @@
 done:
 	kfree(adapter->vf_cfg);
 	adapter->num_vfs = 0;
+	adapter->flags &= ~BE_FLAGS_SRIOV_ENABLED;
 }
 
 static void be_clear_queues(struct be_adapter *adapter)
@@ -3241,6 +3242,8 @@
 			goto err;
 		}
 	}
+
+	adapter->flags |= BE_FLAGS_SRIOV_ENABLED;
 	return 0;
 err:
 	dev_err(dev, "VF setup failed\n");